Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with structural-analysis
Search options not deleted
user 1832
Structural analysis is the determination of the effects of loads on physical structures and their components. Structures subject to this type of analysis include all that must withstand loads, such as buildings, bridges, vehicles, furniture, soil strata, prostheses and biological tissue.
2
votes
In a pre stressed concrete? Why is the top fiber considered as under compressive stress?
The stress profile of a prestressed beam depends on the layout of the prestressing cables.
It's important to remember these cables don't just apply bending moment, but simple compression, too. Indeed, …
- 13.1k
2
votes
Accepted
Justification of static equilibrium for a cut structure/frame
For your first question regarding whether the shear in BC equals the shear in DE: yes, they are the same.
An easy way of seeing this is that some fraction of $P$ is going to be absorbed by BC as shear …
- 13.1k
3
votes
Accepted
Transforming the Area of a Hollow Square Section filled with concrete into the equivalent ar...
You can simply calculate "equivalent" cross-sectional stiffness values.
Note that all non-zero terms of the stiffness matrix depend on one of these values: $EA$ or $EI$. These are the cross-sectional …
- 13.1k
5
votes
Accepted
Rigidity and bending moment
Yes, a rigid beam can contain bending moments (as well as any other internal forces). Stiffness affects how an element deforms, not its capacity to resist forces.
In isostatic (statically determinate) …
- 13.1k
4
votes
Proving the advantage of a composite beam
I find it a bit easier to explore this in terms of stiffness.
The strength of a cross-section to bending is
$$M_R = \dfrac{f_yI}{c} = \dfrac{\epsilon_yEI}{c}$$
where $f_y$ is the yield stress, which i …
- 13.1k
0
votes
Accepted
How is any kind of structural reliability achieved if the probability of annual wind speed e...
Buildings are typically designed with a 50-year lifespan. So a 2% yearly chance of passing the limit makes intuitive sense.
But you're right: that'd basically mean we expect the structure to collapse …
- 13.1k
3
votes
Confused about internal hinges for calcualting reactions
An extended discussion on internal vs. external forces
We usually like to describe hinges as "places where the moment is always zero."
But, wait a minute, the moment is always zero anywhere in a stabl …
- 13.1k
1
vote
Accepted
How to determine the fixed end moment?
It can't be done
Indeed, this problem is unsolvable using only equilibrium equations.
Broadly speaking, structures can be split into three categories:
hypostatic: when there are too few supports to k …
- 13.1k
0
votes
Bending moment calculation
It depends on how you choose to interpret those images.
When doing simple models and especially when one's at an early stage in their education, the answer is that the three are equivalent.
The reason …
- 13.1k
0
votes
Buckling of Parallel rods
The behavior of such a system isn't necessarily well-described by simple buckling.
As other answers have mentioned, the most important thing is how the rods are connected to the horizontal plates:
If …
- 13.1k
5
votes
Accepted
What is the significance of hinge in the internal structure of the beam?
A hinge is a point where there is no restriction on rotation. For other points on a beam, the rotation to the left of a point must be equal to the rotation to the right of that same point; that is, t …
- 13.1k
-1
votes
Which would be the most rigid?
It depends on the specific dimensions of the different parts.
@kamran's answer has the correct stiffness equation of $\dfrac{k\cdot EI}{\ell^3}$ (where $k$ depends on the loading and boundary conditi …
- 13.1k
3
votes
Accepted
Analysis Of Statically Indeterminate Structures By Hand
In my professional experience, I've found few opportunities to perform literal "by hand" verification.
Unless you're dealing with simple structures (or structures which can be simplified as such), it …
- 13.1k
2
votes
Which method is better to solve indeterminate trusses, force or displacement method?
Depends on your definition of "better" and on the specific truss being analyzed.
The displacement method is useful in that it is agnostic to such things, statically determinate and indeterminate stru …
- 13.1k
1
vote
Accepted
Deflection In Multistory Structure
From a straightforward, academic perspective (by which I mean disconsidering seismic and other code-enforced conditions), your approach is either exactly or roughly correct (depending on your definiti …
- 13.1k